fix: concatenation in PHP language files causes error in loader (#25)

Author: rafalglowacz

.gitignore

@@ -1,3 +1,4 @@
+.idea
 /node_modules
 /coverage
 /dist

src/loader.ts

@@ -84,6 +84,10 @@ const parseItem = (expr) => {
     return items
   }
 
+  if (expr.kind === 'bin') {
+    return parseItem(expr.left) + parseItem(expr.right);
+  }
+
   if (expr.key) {
     return { [expr.key.value]: parseItem(expr.value) }
   }

test/fixtures/lang/en/auth.php

@@ -9,4 +9,9 @@
         ]
     ],
     'arr' => ['foo', 'bar'],
+    'multiline' => 'Lorem ' .
+        'ipsum ' .
+        'dolor ' .
+        'sit ' . 
+        'amet.',
 ];

test/loader.test.ts

@@ -14,6 +14,7 @@ it('creates a file for each lang', () => {
     const langEn = JSON.parse(fs.readFileSync(files[0].path).toString());
     expect(langEn['auth.failed']).toBe('These credentials do not match our records.');
     expect(langEn['auth.foo.level1.level2']).toBe('baren');
+    expect(langEn['auth.multiline']).toBe('Lorem ipsum dolor sit amet.');
 
     const langPt = JSON.parse(fs.readFileSync(files[2].path).toString());
     expect(langPt['auth.failed']).toBe('As credenciais indicadas não coincidem com as registadas no sistema.');